【摘要】 在超扭曲向列（ＳＴＮ）液晶显示器中，液晶分子的扭曲角为１８０～２７０°，为此要求液晶分子相对于基板表面有５～３０°的预倾角，这是通过在基板表面涂布聚酰亚胺并施以表面定向摩擦而实现。因此，表面取向层的获得及取向工艺是ＳＴＮ显示的关键技术之一。作者讨论了聚酰亚胺的化学组成及取向剂的因含量等因素对预倾角的影响。更多还原

【Abstract】 The orientation of liquid crystal molecules on the substrate surface which makes them twist 180°-270° is one of the key technologies for STN-LCD manufactures. A lot of polyimides were synthesized and the influence of chemical components of polyimide, monoamine amount and concentration of aligning agent on the pretilt angle were discussed更多还原